Wavelength converter, light emitting device and projection system

Japanese Patent JP6317373

B2

Disclosed are a wavelength conversion device, a light-emitting device and a projection system, comprising a wavelength conversion layer (210) having a first surface (210a) and a second surface (210b) facing each other, wherein the first surface (210a) is used for receiving an exciting beam, the wavelength conversion layer (210) is used for absorbing the exciting beam to produce an excited beam and emitting the excited beam or the mixture of the excited beam and exciting beam from the first surface (210a) and the second surface (210b); a scattering and reflective substrate (220) stacked with the wavelength conversion layer (210), wherein the scattering and reflective substrate (220) comprises a white porous ceramic or a white scattering material for scattering the incident light, the white scattering material is saline material or oxide material, and the scattering and reflective substrate (220) comprises a third surface (222a) facing the second surface (210b) and is used for scattering at least a part of the incident light on the third surface (222a) and then emitting all the light from the third surface (222a) to the second surface. The embodiments of the invention provide a reflective wavelength conversion device, a relevant light-emitting device and projection system with high temperature resistance and high reflectivity.

Hu Fei
Yang Tsubasa
Yang Takeshi

JP2015560534A

April 25, 2018

March 03, 2014

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APPOTRONICS CORPORATION LIMITED

F21V9/40; G03B21/14; G02B5/20; G03B21/00; H01S5/022

JP2011529266A
JP2010237443A
JP2007121613A
JP2007149776A
JP2013143436A
JP2011198560A

WO2013001953A1
WO2010021089A1

Fumio Takino
Hideo Takino
Takao Kawasaki
Toshiaki Tsuda

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